NGK 1098 (BR7HS-10) Spark Plug, Replaces Mercury 33-828942, Fits Yamaha, Suzuki, Tohatsu, Nissan Outboards

The NGK 1098 is a BR7HS-10 standard spark plug built for Mercury, Yamaha, Suzuki, Tohatsu, and Nissan outboard engines. It uses a solid copper core for superior heat dissipation and conductivity across a broad heat range, paired with a nickel center electrode tip and a nickel ground electrode in a standard ground configuration. The plug is treated with corrosion-resistant plating that eases installation and removal, and it carries a resistance rating of 5000 ohms to help suppress ignition interference. As an OE or equivalent replacement, the NGK 1098 (BR7HS-10) is a direct, drop-in match for engines originally fitted with the OEM numbers it replaces, including Mercury 33-828942, Yamaha B7H-S0000-00-00, and Evinrude/Johnson 0509568. It threads to an M10 specification and is commonly supplied pre-gapped to 1 millimeter to match factory settings, though the engine owner's manual should always be checked to confirm the correct plug and gap. Always verify the correct spark plug against your engine's original equipment manufacturer specification before installation, since using the wrong plug can reduce performance, hurt fuel economy, or cause engine damage.

Specifications

• Brand: NGK
• Manufacturer Part Number: 1098
• Spark Plug Designation: BR7HS-10
• Thread Size: M10
• Gap Size: 1 millimeter
• Resistance: 5000 ohms
• Ground Configuration: Standard
• Ground Electrode Core Material: Nickel
• Center Electrode Core Material: Copper
• Center Electrode Tip Material: Nickel
• UPC: 087295110980
• Weight: 0.15 pounds

Fitment

• Mercury Outboards
• Nissan Outboards, 1997-2007
• Suzuki Outboards, 1977-2000
• Tohatsu Outboards, 1996-2007
• Yamaha Outboards, 1984-2005

Replaces (OEM)

• Mercury 33-828942
• Yamaha B7H-S0000-00-00
• Evinrude/Johnson 0509568

Frequently Asked Questions

What engines does the NGK 1098 spark plug fit? The NGK 1098 (BR7HS-10) fits Mercury outboards, Nissan outboards from 1997-2007, Suzuki outboards from 1977-2000, Tohatsu outboards from 1996-2007, and Yamaha outboards from 1984-2005.

Is the NGK 1098 the same as BR7HS-10? Yes, part number 1098 is the NGK BR7HS-10 standard spark plug, built with a solid copper core and nickel electrodes for OE-level performance.

What OEM part numbers does this spark plug replace? The NGK 1098 replaces Mercury 33-828942, Yamaha B7H-S0000-00-00, and Evinrude/Johnson 0509568.

What is the thread size of the NGK 1098 spark plug? This NGK spark plug uses an M10 thread size.

Does the NGK 1098 come pre-gapped? The BR7HS-10 spark plug is commonly supplied pre-gapped to 1 millimeter to match factory engine specifications, but the gap should be confirmed against your engine's manual.

What material is the electrode made of on the NGK 1098? The NGK 1098 has a copper center electrode core with a nickel center electrode tip and a nickel standard ground electrode.

How much does the NGK 1098 spark plug weigh? The NGK 1098 spark plug weighs 0.15 pounds.

Is this a genuine NGK part or an aftermarket copy? The 1098 is a genuine NGK BR7HS-10 standard spark plug, not an aftermarket substitute, and functions as an OE or equivalent replacement for the outboard applications it lists.

What is the resistance rating of the NGK 1098 spark plug? This spark plug has a resistance rating of 5000 ohms, which helps suppress ignition system interference.

Does the NGK 1098 have corrosion-resistant plating? Yes, the BR7HS-10 plug is treated with corrosion-resistant plating to make installation and removal easier over time.

Can I use the NGK 1098 in a Tohatsu outboard? Yes, the NGK 1098 (BR7HS-10) is listed to fit Tohatsu outboards from 1996-2007.

What ground electrode configuration does the NGK 1098 use? The NGK 1098 uses a standard ground electrode configuration with a nickel ground electrode.